I keep having a weird issue with the drawing file I'm working in. 

If you look at the A0.1 and A1.1 layouts, the text for the ceiling height symbols is in the correct location.  However, if you look at the model for those drawings, the text for the ceiling height symbols is now in a different location.  Versions of this issue have happened several times since yesterday.  I would have the text all in the correct spot and suddenly it would move on its own for some reason.  At times I was unable to click on and select the text.  I am wondering if there's an issue with the file being corrupted or with my computer as I've had some other weird issues with AutoCad crashing or freezing recently. 

Thank you.